Two things must be noted about the locative case and its limited nature. First, it only exists as a case for masculines and neuters, which is why the corresponding feminine cell has been left blanked out. Rather, for marked feminine and unmarked nouns the locative is a postposition, which are explained on later in the article. Second, there is no distinction of gender.
Furthermore, there also exists in Gujarati a plural marker (o). Unlike the English plural it is not mandatory, and may be left unexpressed if plurality is already expressed in some other way: by explicit numbering, agreement, or the above declensional system (as is the case with nominative marked masculines and neuters). And yet despite the declensional system, (o) often gets tacked onto nominative marked masculine and neuter plurals anyway.